Home / 2,587.80-3,883.32-1,722.72

Finding the Fourth Proportional to 2,587.80, 3,883.32 and 1,722.72

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Solution

The fourth proportional to 2,587.80, 3,883.32 and 1,722.72 is: 2,585.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.80 : 3,883.32 = 1,722.72 : x
  2. Step 2: Convert to fraction form
    2,587.80/3,883.32 = 1,722.72/x
  3. Step 3: Cross multiply
    2,587.80x = 3,883.32 × 1,722.72
  4. Step 4: Simplify right side
    2,587.80x = 6,689,873.03
  5. Step 5: Solve for x
    x = 6,689,873.03/2,587.80
  6. Step 6: Final answer
    x = 2,585.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.